/**************************************************************************/
/*  text_server.h                                                         */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
/* "Software"), to deal in the Software without restriction, including    */
/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
/* permit persons to whom the Software is furnished to do so, subject to  */
/* the following conditions:                                              */
/*                                                                        */
/* The above copyright notice and this permission notice shall be         */
/* included in all copies or substantial portions of the Software.        */
/*                                                                        */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
/**************************************************************************/
#pragma once
#include "backend/text_server/rid.h"
#include "backend/text_server/ustring.h"
#include "backend/text_server/rect2.h"
#include "backend/text_server/vector3.h"
#include "backend/text_server/color.h"
#include "backend/text_server/transform_2d.h"
#include "backend/text_server/image_texture.h"

namespace skr::gui
{
struct IGDIRenderer;
struct ICanvas;
struct IEmbeddedTextServiceResourceProvider;
} // namespace skr::gui

namespace godot
{
using TextServerVariants   = HashMap<uint32_t, Vector3i>;
using TextServerFeatures   = HashMap<uint32_t, uint32_t>;
using VariationCoordinates = HashMap<uint32_t, double>;

typedef Vector<uint8_t> PackedByteArray;
typedef Vector<int32_t> PackedInt32Array;
typedef Vector<int64_t> PackedInt64Array;
typedef Vector<float>   PackedFloat32Array;
typedef Vector<double>  PackedFloat64Array;
typedef Vector<String>  PackedStringArray;
typedef Vector<Vector2> PackedVector2Array;
typedef Vector<Vector3> PackedVector3Array;
typedef Vector<Color>   PackedColorArray;

struct Glyph;
struct CaretInfo;

class TextServer
{

public:
    // ++ SKR
    struct TextDrawProxy {
        ::skr::gui::ICanvas* canvas = nullptr;
    };
    // --SKR
    enum FontAntialiasing
    {
        FONT_ANTIALIASING_NONE,
        FONT_ANTIALIASING_GRAY,
        FONT_ANTIALIASING_LCD,
    };

    enum FontLCDSubpixelLayout
    {
        FONT_LCD_SUBPIXEL_LAYOUT_NONE,
        FONT_LCD_SUBPIXEL_LAYOUT_HRGB,
        FONT_LCD_SUBPIXEL_LAYOUT_HBGR,
        FONT_LCD_SUBPIXEL_LAYOUT_VRGB,
        FONT_LCD_SUBPIXEL_LAYOUT_VBGR,
        FONT_LCD_SUBPIXEL_LAYOUT_MAX,
    };

    enum Direction
    {
        DIRECTION_AUTO,
        DIRECTION_LTR,
        DIRECTION_RTL,
        DIRECTION_INHERITED,
    };

    enum Orientation
    {
        ORIENTATION_HORIZONTAL,
        ORIENTATION_VERTICAL
    };

    enum JustificationFlag
    {
        JUSTIFICATION_NONE               = 0,
        JUSTIFICATION_KASHIDA            = 1 << 0,
        JUSTIFICATION_WORD_BOUND         = 1 << 1,
        JUSTIFICATION_TRIM_EDGE_SPACES   = 1 << 2,
        JUSTIFICATION_AFTER_LAST_TAB     = 1 << 3,
        JUSTIFICATION_CONSTRAIN_ELLIPSIS = 1 << 4,
    };

    enum VisibleCharactersBehavior
    {
        VC_CHARS_BEFORE_SHAPING,
        VC_CHARS_AFTER_SHAPING,
        VC_GLYPHS_AUTO,
        VC_GLYPHS_LTR,
        VC_GLYPHS_RTL,
    };

    enum AutowrapMode
    {
        AUTOWRAP_OFF,
        AUTOWRAP_ARBITRARY,
        AUTOWRAP_WORD,
        AUTOWRAP_WORD_SMART
    };

    enum LineBreakFlag
    {
        BREAK_NONE             = 0,
        BREAK_MANDATORY        = 1 << 0,
        BREAK_WORD_BOUND       = 1 << 1,
        BREAK_GRAPHEME_BOUND   = 1 << 2,
        BREAK_ADAPTIVE         = 1 << 3,
        BREAK_TRIM_EDGE_SPACES = 1 << 4,
    };

    enum OverrunBehavior
    {
        OVERRUN_NO_TRIMMING,
        OVERRUN_TRIM_CHAR,
        OVERRUN_TRIM_WORD,
        OVERRUN_TRIM_ELLIPSIS,
        OVERRUN_TRIM_WORD_ELLIPSIS,
    };

    enum TextOverrunFlag
    {
        OVERRUN_NO_TRIM             = 0,
        OVERRUN_TRIM                = 1 << 0,
        OVERRUN_TRIM_WORD_ONLY      = 1 << 1,
        OVERRUN_ADD_ELLIPSIS        = 1 << 2,
        OVERRUN_ENFORCE_ELLIPSIS    = 1 << 3,
        OVERRUN_JUSTIFICATION_AWARE = 1 << 4,
    };

    enum GraphemeFlag
    {
        GRAPHEME_IS_VALID                  = 1 << 0,  // Glyph is valid.
        GRAPHEME_IS_RTL                    = 1 << 1,  // Glyph is right-to-left.
        GRAPHEME_IS_VIRTUAL                = 1 << 2,  // Glyph is not part of source string (added by fit_to_width function, do not affect caret movement).
        GRAPHEME_IS_SPACE                  = 1 << 3,  // Is whitespace (for justification and word breaks).
        GRAPHEME_IS_BREAK_HARD             = 1 << 4,  // Is line break (mandatory break, e.g. "\n").
        GRAPHEME_IS_BREAK_SOFT             = 1 << 5,  // Is line break (optional break, e.g. space).
        GRAPHEME_IS_TAB                    = 1 << 6,  // Is tab or vertical tab.
        GRAPHEME_IS_ELONGATION             = 1 << 7,  // Elongation (e.g. kashida), glyph can be duplicated or truncated to fit line to width.
        GRAPHEME_IS_PUNCTUATION            = 1 << 8,  // Punctuation, except underscore (can be used as word break, but not line break or justifiction).
        GRAPHEME_IS_UNDERSCORE             = 1 << 9,  // Underscore (can be used as word break).
        GRAPHEME_IS_CONNECTED              = 1 << 10, // Connected to previous grapheme.
        GRAPHEME_IS_SAFE_TO_INSERT_TATWEEL = 1 << 11, // It is safe to insert a U+0640 before this grapheme for elongation.
    };

    enum Hinting
    {
        HINTING_NONE,
        HINTING_LIGHT,
        HINTING_NORMAL
    };

    enum SubpixelPositioning
    {
        SUBPIXEL_POSITIONING_DISABLED    = 0,
        SUBPIXEL_POSITIONING_AUTO        = 1,
        SUBPIXEL_POSITIONING_ONE_HALF    = 2,
        SUBPIXEL_POSITIONING_ONE_QUARTER = 3,

        SUBPIXEL_POSITIONING_ONE_HALF_MAX_SIZE    = 20,
        SUBPIXEL_POSITIONING_ONE_QUARTER_MAX_SIZE = 16,
    };

    enum Feature
    {
        FEATURE_SIMPLE_LAYOUT                     = 1 << 0,
        FEATURE_BIDI_LAYOUT                       = 1 << 1,
        FEATURE_VERTICAL_LAYOUT                   = 1 << 2,
        FEATURE_SHAPING                           = 1 << 3,
        FEATURE_KASHIDA_JUSTIFICATION             = 1 << 4,
        FEATURE_BREAK_ITERATORS                   = 1 << 5,
        FEATURE_FONT_BITMAP                       = 1 << 6,
        FEATURE_FONT_DYNAMIC                      = 1 << 7,
        FEATURE_FONT_MSDF                         = 1 << 8,
        FEATURE_FONT_SYSTEM                       = 1 << 9,
        FEATURE_FONT_VARIABLE                     = 1 << 10,
        FEATURE_CONTEXT_SENSITIVE_CASE_CONVERSION = 1 << 11,
        FEATURE_USE_SUPPORT_DATA                  = 1 << 12,
        FEATURE_UNICODE_IDENTIFIERS               = 1 << 13,
        FEATURE_UNICODE_SECURITY                  = 1 << 14,
    };

    enum ContourPointTag
    {
        CONTOUR_CURVE_TAG_ON        = 0x01,
        CONTOUR_CURVE_TAG_OFF_CONIC = 0x00,
        CONTOUR_CURVE_TAG_OFF_CUBIC = 0x02
    };

    enum SpacingType
    {
        SPACING_GLYPH,
        SPACING_SPACE,
        SPACING_TOP,
        SPACING_BOTTOM,
        SPACING_MAX,
    };

    enum FontStyle
    {
        FONT_BOLD        = 1 << 0,
        FONT_ITALIC      = 1 << 1,
        FONT_FIXED_WIDTH = 1 << 2,
    };

    enum StructuredTextParser
    {
        STRUCTURED_TEXT_DEFAULT,
        STRUCTURED_TEXT_URI,
        STRUCTURED_TEXT_FILE,
        STRUCTURED_TEXT_EMAIL,
        STRUCTURED_TEXT_LIST,
        STRUCTURED_TEXT_GDSCRIPT,
        STRUCTURED_TEXT_CUSTOM
    };

    void _draw_hex_code_box_number(const RID& p_canvas, int64_t p_size, const Vector2& p_pos, uint8_t p_index, const Color& p_color) const;

protected:
    HashMap<char32_t, char32_t> diacritics_map;
    void                        _diacritics_map_add(const String& p_from, char32_t p_to);
    void                        _init_diacritics_map();

    static void _bind_methods();

public:
    virtual bool    has_feature(Feature p_feature) const = 0;
    virtual String  get_name() const                     = 0;
    virtual int64_t get_features() const                 = 0;

    virtual void free_rid(const RID& p_rid)                  = 0;
    virtual bool has(const RID& p_rid)                       = 0;
    virtual bool load_support_data(const String& p_filename) = 0;

    virtual String get_support_data_filename() const                 = 0;
    virtual String get_support_data_info() const                     = 0;
    virtual bool   save_support_data(const String& p_filename) const = 0;

    virtual bool is_locale_right_to_left(const String& p_locale) const = 0;

    virtual int64_t name_to_tag(const String& p_name) const { return 0; };
    virtual String  tag_to_name(int64_t p_tag) const { return ""; };

    /* Font interface */

    virtual RID create_font() = 0;

    virtual void font_set_data(const RID& p_font_rid, const PackedByteArray& p_data)                      = 0;
    virtual void font_set_data_ptr(const RID& p_font_rid, const uint8_t* p_data_ptr, int64_t p_data_size) = 0;

    virtual void    font_set_face_index(const RID& p_font_rid, int64_t p_index) = 0;
    virtual int64_t font_get_face_index(const RID& p_font_rid) const            = 0;

    virtual int64_t font_get_face_count(const RID& p_font_rid) const = 0;

    virtual void                font_set_style(const RID& p_font_rid, BitField<FontStyle> p_style) = 0;
    virtual BitField<FontStyle> font_get_style(const RID& p_font_rid) const                        = 0;

    virtual void   font_set_name(const RID& p_font_rid, const String& p_name) = 0;
    virtual String font_get_name(const RID& p_font_rid) const                 = 0;

    virtual void   font_set_style_name(const RID& p_font_rid, const String& p_name) = 0;
    virtual String font_get_style_name(const RID& p_font_rid) const                 = 0;

    virtual void    font_set_weight(const RID& p_font_rid, int64_t p_weight) = 0;
    virtual int64_t font_get_weight(const RID& p_font_rid) const             = 0;

    virtual void    font_set_stretch(const RID& p_font_rid, int64_t p_stretch) = 0;
    virtual int64_t font_get_stretch(const RID& p_font_rid) const              = 0;

    virtual void             font_set_antialiasing(const RID& p_font_rid, FontAntialiasing p_antialiasing) = 0;
    virtual FontAntialiasing font_get_antialiasing(const RID& p_font_rid) const                            = 0;

    virtual void font_set_generate_mipmaps(const RID& p_font_rid, bool p_generate_mipmaps) = 0;
    virtual bool font_get_generate_mipmaps(const RID& p_font_rid) const                    = 0;

    virtual void font_set_multichannel_signed_distance_field(const RID& p_font_rid, bool p_msdf) = 0;
    virtual bool font_is_multichannel_signed_distance_field(const RID& p_font_rid) const         = 0;

    virtual void    font_set_msdf_pixel_range(const RID& p_font_rid, int64_t p_msdf_pixel_range) = 0;
    virtual int64_t font_get_msdf_pixel_range(const RID& p_font_rid) const                       = 0;

    virtual void    font_set_msdf_size(const RID& p_font_rid, int64_t p_msdf_size) = 0;
    virtual int64_t font_get_msdf_size(const RID& p_font_rid) const                = 0;

    virtual void    font_set_fixed_size(const RID& p_font_rid, int64_t p_fixed_size) = 0;
    virtual int64_t font_get_fixed_size(const RID& p_font_rid) const                 = 0;

    virtual void font_set_allow_system_fallback(const RID& p_font_rid, bool p_allow_system_fallback) = 0;
    virtual bool font_is_allow_system_fallback(const RID& p_font_rid) const                          = 0;

    virtual void font_set_force_autohinter(const RID& p_font_rid, bool p_force_autohinter) = 0;
    virtual bool font_is_force_autohinter(const RID& p_font_rid) const                     = 0;

    virtual void    font_set_hinting(const RID& p_font_rid, Hinting p_hinting) = 0;
    virtual Hinting font_get_hinting(const RID& p_font_rid) const              = 0;

    virtual void                font_set_subpixel_positioning(const RID& p_font_rid, SubpixelPositioning p_subpixel) = 0;
    virtual SubpixelPositioning font_get_subpixel_positioning(const RID& p_font_rid) const                           = 0;

    virtual void   font_set_embolden(const RID& p_font_rid, double p_strength) = 0;
    virtual double font_get_embolden(const RID& p_font_rid) const              = 0;

    virtual void        font_set_transform(const RID& p_font_rid, const Transform2D& p_transform) = 0;
    virtual Transform2D font_get_transform(const RID& p_font_rid) const                           = 0;

    virtual void                 font_set_variation_coordinates(const RID& p_font_rid, const VariationCoordinates& p_variation_coordinates) = 0;
    virtual VariationCoordinates font_get_variation_coordinates(const RID& p_font_rid) const                                                = 0;

    virtual void   font_set_oversampling(const RID& p_font_rid, double p_oversampling) = 0;
    virtual double font_get_oversampling(const RID& p_font_rid) const                  = 0;

    virtual TypedArray<Vector2i> font_get_size_cache_list(const RID& p_font_rid) const                 = 0;
    virtual void                 font_clear_size_cache(const RID& p_font_rid)                          = 0;
    virtual void                 font_remove_size_cache(const RID& p_font_rid, const Vector2i& p_size) = 0;

    virtual void   font_set_ascent(const RID& p_font_rid, int64_t p_size, double p_ascent) = 0;
    virtual double font_get_ascent(const RID& p_font_rid, int64_t p_size) const            = 0;

    virtual void   font_set_descent(const RID& p_font_rid, int64_t p_size, double p_descent) = 0;
    virtual double font_get_descent(const RID& p_font_rid, int64_t p_size) const             = 0;

    virtual void   font_set_underline_position(const RID& p_font_rid, int64_t p_size, double p_underline_position) = 0;
    virtual double font_get_underline_position(const RID& p_font_rid, int64_t p_size) const                        = 0;

    virtual void   font_set_underline_thickness(const RID& p_font_rid, int64_t p_size, double p_underline_thickness) = 0;
    virtual double font_get_underline_thickness(const RID& p_font_rid, int64_t p_size) const                         = 0;

    virtual void   font_set_scale(const RID& p_font_rid, int64_t p_size, double p_scale) = 0;
    virtual double font_get_scale(const RID& p_font_rid, int64_t p_size) const           = 0;

    virtual int64_t font_get_texture_count(const RID& p_font_rid, const Vector2i& p_size) const                 = 0;
    virtual void    font_clear_textures(const RID& p_font_rid, const Vector2i& p_size)                          = 0;
    virtual void    font_remove_texture(const RID& p_font_rid, const Vector2i& p_size, int64_t p_texture_index) = 0;

    virtual void                font_set_texture_image(const RID& p_font_rid, const Vector2i& p_size, int64_t p_texture_index, const Ref<FontAtlasImage>& p_image) = 0;
    virtual Ref<FontAtlasImage> font_get_texture_image(const RID& p_font_rid, const Vector2i& p_size, int64_t p_texture_index) const                               = 0;

    virtual void             font_set_texture_offsets(const RID& p_font_rid, const Vector2i& p_size, int64_t p_texture_index, const PackedInt32Array& p_offset) = 0;
    virtual PackedInt32Array font_get_texture_offsets(const RID& p_font_rid, const Vector2i& p_size, int64_t p_texture_index) const                             = 0;

    virtual PackedInt32Array font_get_glyph_list(const RID& p_font_rid, const Vector2i& p_size) const          = 0;
    virtual void             font_clear_glyphs(const RID& p_font_rid, const Vector2i& p_size)                  = 0;
    virtual void             font_remove_glyph(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph) = 0;

    virtual Vector2 font_get_glyph_advance(const RID& p_font_rid, int64_t p_size, int64_t p_glyph) const                     = 0;
    virtual void    font_set_glyph_advance(const RID& p_font_rid, int64_t p_size, int64_t p_glyph, const Vector2& p_advance) = 0;

    virtual Vector2 font_get_glyph_offset(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph) const                    = 0;
    virtual void    font_set_glyph_offset(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph, const Vector2& p_offset) = 0;

    virtual Vector2 font_get_glyph_size(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph) const                     = 0;
    virtual void    font_set_glyph_size(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph, const Vector2& p_gl_size) = 0;

    virtual Rect2 font_get_glyph_uv_rect(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph) const                   = 0;
    virtual void  font_set_glyph_uv_rect(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph, const Rect2& p_uv_rect) = 0;

    virtual int64_t font_get_glyph_texture_idx(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph) const                  = 0;
    virtual void    font_set_glyph_texture_idx(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph, int64_t p_texture_idx) = 0;
    virtual RID     font_get_glyph_texture_rid(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph) const                  = 0;
    virtual Size2   font_get_glyph_texture_size(const RID& p_font_rid, const Vector2i& p_size, int64_t p_glyph) const                 = 0;

    // SKR MODIFIED
    // virtual Dictionary font_get_glyph_contours(const RID &p_font, int64_t p_size, int64_t p_index) const = 0;
    virtual bool font_get_glyph_contours(const RID& p_font, int64_t p_size, int64_t p_index, Vector<Vector3>& r_points, Vector<int32_t>& r_contours, bool& r_orientation) const = 0;

    virtual TypedArray<Vector2i> font_get_kerning_list(const RID& p_font_rid, int64_t p_size) const                       = 0;
    virtual void                 font_clear_kerning_map(const RID& p_font_rid, int64_t p_size)                            = 0;
    virtual void                 font_remove_kerning(const RID& p_font_rid, int64_t p_size, const Vector2i& p_glyph_pair) = 0;

    virtual void    font_set_kerning(const RID& p_font_rid, int64_t p_size, const Vector2i& p_glyph_pair, const Vector2& p_kerning) = 0;
    virtual Vector2 font_get_kerning(const RID& p_font_rid, int64_t p_size, const Vector2i& p_glyph_pair) const                     = 0;

    virtual int64_t font_get_glyph_index(const RID& p_font_rid, int64_t p_size, int64_t p_char, int64_t p_variation_selector) const = 0;

    virtual bool   font_has_char(const RID& p_font_rid, int64_t p_char) const = 0;
    virtual String font_get_supported_chars(const RID& p_font_rid) const      = 0;

    virtual void font_render_range(const RID& p_font, const Vector2i& p_size, int64_t p_start, int64_t p_end) = 0;
    virtual void font_render_glyph(const RID& p_font_rid, const Vector2i& p_size, int64_t p_index)            = 0;

    virtual void font_draw_glyph(const RID& p_font, const RID& p_canvas, int64_t p_size, const Vector2& p_pos, int64_t p_index, const Color& p_color = Color(1, 1, 1)) const                                 = 0;
    virtual void font_draw_glyph_outline(const RID& p_font, const RID& p_canvas, int64_t p_size, int64_t p_outline_size, const Vector2& p_pos, int64_t p_index, const Color& p_color = Color(1, 1, 1)) const = 0;

    virtual bool              font_is_language_supported(const RID& p_font_rid, const String& p_language) const                     = 0;
    virtual void              font_set_language_support_override(const RID& p_font_rid, const String& p_language, bool p_supported) = 0;
    virtual bool              font_get_language_support_override(const RID& p_font_rid, const String& p_language)                   = 0;
    virtual void              font_remove_language_support_override(const RID& p_font_rid, const String& p_language)                = 0;
    virtual PackedStringArray font_get_language_support_overrides(const RID& p_font_rid)                                            = 0;

    virtual bool              font_is_script_supported(const RID& p_font_rid, const String& p_script) const                     = 0;
    virtual void              font_set_script_support_override(const RID& p_font_rid, const String& p_script, bool p_supported) = 0;
    virtual bool              font_get_script_support_override(const RID& p_font_rid, const String& p_script)                   = 0;
    virtual void              font_remove_script_support_override(const RID& p_font_rid, const String& p_script)                = 0;
    virtual PackedStringArray font_get_script_support_overrides(const RID& p_font_rid)                                          = 0;

    virtual void               font_set_opentype_feature_overrides(const RID& p_font_rid, const TextServerFeatures& p_overrides) = 0;
    virtual TextServerFeatures font_get_opentype_feature_overrides(const RID& p_font_rid) const                                  = 0;

    virtual TextServerFeatures font_supported_feature_list(const RID& p_font_rid) const   = 0;
    virtual TextServerVariants font_supported_variation_list(const RID& p_font_rid) const = 0;

    virtual double font_get_global_oversampling() const                = 0;
    virtual void   font_set_global_oversampling(double p_oversampling) = 0;

    virtual Vector2 get_hex_code_box_size(int64_t p_size, int64_t p_index) const;
    virtual void    draw_hex_code_box(const RID& p_canvas, int64_t p_size, const Vector2& p_pos, int64_t p_index, const Color& p_color) const;

    /* Shaped text buffer interface */

    virtual RID create_shaped_text(Direction p_direction = DIRECTION_AUTO, Orientation p_orientation = ORIENTATION_HORIZONTAL) = 0;

    virtual void shaped_text_clear(const RID& p_shaped) = 0;

    virtual void      shaped_text_set_direction(const RID& p_shaped, Direction p_direction = DIRECTION_AUTO) = 0;
    virtual Direction shaped_text_get_direction(const RID& p_shaped) const                                   = 0;
    virtual Direction shaped_text_get_inferred_direction(const RID& p_shaped) const                          = 0;

    virtual void shaped_text_set_bidi_override(const RID& p_shaped, const Vector<Vector3i>& p_override) = 0;

    virtual void   shaped_text_set_custom_punctuation(const RID& p_shaped, const String& p_punct) = 0;
    virtual String shaped_text_get_custom_punctuation(const RID& p_shaped) const                  = 0;

    virtual void        shaped_text_set_orientation(const RID& p_shaped, Orientation p_orientation = ORIENTATION_HORIZONTAL) = 0;
    virtual Orientation shaped_text_get_orientation(const RID& p_shaped) const                                               = 0;

    virtual void shaped_text_set_preserve_invalid(const RID& p_shaped, bool p_enabled) = 0;
    virtual bool shaped_text_get_preserve_invalid(const RID& p_shaped) const           = 0;

    virtual void shaped_text_set_preserve_control(const RID& p_shaped, bool p_enabled) = 0;
    virtual bool shaped_text_get_preserve_control(const RID& p_shaped) const           = 0;

    virtual void    shaped_text_set_spacing(const RID& p_shaped, SpacingType p_spacing, int64_t p_value) = 0;
    virtual int64_t shaped_text_get_spacing(const RID& p_shaped, SpacingType p_spacing) const            = 0;

    virtual bool shaped_text_add_string(const RID& p_shaped, const String& p_text, const TypedArray<RID>& p_fonts, int64_t p_size, const TextServerFeatures& p_opentype_features = {}, const String& p_language = "", const Variant& p_meta = Variant()) = 0;
    virtual bool shaped_text_add_object(const RID& p_shaped, const Variant& p_key, const Size2& p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER, int64_t p_length = 1, double p_baseline = 0.0)                                         = 0;
    virtual bool shaped_text_resize_object(const RID& p_shaped, const Variant& p_key, const Size2& p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER, double p_baseline = 0.0)                                                            = 0;

    virtual int64_t shaped_get_span_count(const RID& p_shaped) const                                                                                                                      = 0;
    virtual Variant shaped_get_span_meta(const RID& p_shaped, int64_t p_index) const                                                                                                      = 0;
    virtual void    shaped_set_span_update_font(const RID& p_shaped, int64_t p_index, const TypedArray<RID>& p_fonts, int64_t p_size, const TextServerFeatures& p_opentype_features = {}) = 0;

    virtual RID shaped_text_substr(const RID& p_shaped, int64_t p_start, int64_t p_length) const = 0; // Copy shaped substring (e.g. line break) without reshaping, but correctly reordered, preservers range.
    virtual RID shaped_text_get_parent(const RID& p_shaped) const                                = 0;

    virtual double shaped_text_fit_to_width(const RID& p_shaped, double p_width, BitField<TextServer::JustificationFlag> p_jst_flags = JUSTIFICATION_WORD_BOUND | JUSTIFICATION_KASHIDA) = 0;
    virtual double shaped_text_tab_align(const RID& p_shaped, const PackedFloat32Array& p_tab_stops)                                                                                     = 0;

    virtual bool shaped_text_shape(const RID& p_shaped)                    = 0;
    virtual bool shaped_text_update_breaks(const RID& p_shaped)            = 0;
    virtual bool shaped_text_update_justification_ops(const RID& p_shaped) = 0;

    virtual bool shaped_text_is_ready(const RID& p_shaped) const = 0;

    virtual const Glyph* shaped_text_get_glyphs(const RID& p_shaped) const = 0;
    // SKR USELESS
    // TypedArray<Dictionary> _shaped_text_get_glyphs_wrapper(const RID &p_shaped) const;
    virtual const Glyph* shaped_text_sort_logical(const RID& p_shaped) = 0;
    // SKR USELESS
    // TypedArray<Dictionary> _shaped_text_sort_logical_wrapper(const RID &p_shaped);
    virtual int64_t shaped_text_get_glyph_count(const RID& p_shaped) const = 0;

    virtual Vector2i shaped_text_get_range(const RID& p_shaped) const = 0;

    virtual PackedInt32Array shaped_text_get_line_breaks_adv(const RID& p_shaped, const PackedFloat32Array& p_width, int64_t p_start = 0, bool p_once = true, BitField<TextServer::LineBreakFlag> p_break_flags = BREAK_MANDATORY | BREAK_WORD_BOUND) const;
    virtual PackedInt32Array shaped_text_get_line_breaks(const RID& p_shaped, double p_width, int64_t p_start = 0, BitField<TextServer::LineBreakFlag> p_break_flags = BREAK_MANDATORY | BREAK_WORD_BOUND) const;
    virtual PackedInt32Array shaped_text_get_word_breaks(const RID& p_shaped, BitField<TextServer::GraphemeFlag> p_grapheme_flags = GRAPHEME_IS_SPACE | GRAPHEME_IS_PUNCTUATION) const;

    virtual int64_t      shaped_text_get_trim_pos(const RID& p_shaped) const        = 0;
    virtual int64_t      shaped_text_get_ellipsis_pos(const RID& p_shaped) const    = 0;
    virtual const Glyph* shaped_text_get_ellipsis_glyphs(const RID& p_shaped) const = 0;
    // SKR USELESS
    // TypedArray<Dictionary> _shaped_text_get_ellipsis_glyphs_wrapper(const RID &p_shaped) const;
    virtual int64_t shaped_text_get_ellipsis_glyph_count(const RID& p_shaped) const = 0;

    virtual void shaped_text_overrun_trim_to_width(const RID& p_shaped, double p_width, BitField<TextServer::TextOverrunFlag> p_trim_flags) = 0;

    virtual Vector<Variant> shaped_text_get_objects(const RID& p_shaped) const                           = 0;
    virtual Rect2           shaped_text_get_object_rect(const RID& p_shaped, const Variant& p_key) const = 0;

    virtual Size2  shaped_text_get_size(const RID& p_shaped) const                = 0;
    virtual double shaped_text_get_ascent(const RID& p_shaped) const              = 0;
    virtual double shaped_text_get_descent(const RID& p_shaped) const             = 0;
    virtual double shaped_text_get_width(const RID& p_shaped) const               = 0;
    virtual double shaped_text_get_underline_position(const RID& p_shaped) const  = 0;
    virtual double shaped_text_get_underline_thickness(const RID& p_shaped) const = 0;

    virtual Direction shaped_text_get_dominant_direction_in_range(const RID& p_shaped, int64_t p_start, int64_t p_end) const;

    virtual CaretInfo shaped_text_get_carets(const RID& p_shaped, int64_t p_position) const;
    // SKR USELESS
    // Dictionary _shaped_text_get_carets_wrapper(const RID &p_shaped, int64_t p_position) const;

    virtual Vector<Vector2> shaped_text_get_selection(const RID& p_shaped, int64_t p_start, int64_t p_end) const;

    virtual int64_t shaped_text_hit_test_grapheme(const RID& p_shaped, double p_coords) const; // Return grapheme index.
    virtual int64_t shaped_text_hit_test_position(const RID& p_shaped, double p_coords) const; // Return caret/selection position.

    virtual Vector2 shaped_text_get_grapheme_bounds(const RID& p_shaped, int64_t p_pos) const;
    virtual int64_t shaped_text_next_grapheme_pos(const RID& p_shaped, int64_t p_pos) const;
    virtual int64_t shaped_text_prev_grapheme_pos(const RID& p_shaped, int64_t p_pos) const;

    // The pen position is always placed on the baseline and moveing left to right.
    virtual void shaped_text_draw(const RID& p_shaped, const RID& p_canvas, const Vector2& p_pos, double p_clip_l = -1.0, double p_clip_r = -1.0, const Color& p_color = Color(1, 1, 1)) const;
    virtual void shaped_text_draw_outline(const RID& p_shaped, const RID& p_canvas, const Vector2& p_pos, double p_clip_l = -1.0, double p_clip_r = -1.0, int64_t p_outline_size = 1, const Color& p_color = Color(1, 1, 1)) const;

    // Number conversion.
    virtual String format_number(const String& p_string, const String& p_language = "") const = 0;
    virtual String parse_number(const String& p_string, const String& p_language = "") const  = 0;
    virtual String percent_sign(const String& p_language = "") const                          = 0;

    // String functions.
    virtual PackedInt32Array string_get_word_breaks(const String& p_string, const String& p_language = "", int64_t p_chars_per_line = 0) const = 0;

    virtual int64_t is_confusable(const String& p_string, const PackedStringArray& p_dict) const { return -1; };
    virtual bool    spoof_check(const String& p_string) const { return false; };

    virtual String strip_diacritics(const String& p_string) const;
    virtual bool   is_valid_identifier(const String& p_string) const;

    // Other string operations.
    virtual String string_to_upper(const String& p_string, const String& p_language = "") const = 0;
    virtual String string_to_lower(const String& p_string, const String& p_language = "") const = 0;

    TypedArray<Vector3i> parse_structured_text(StructuredTextParser p_parser_type, const Vector<String>& p_args, const String& p_text) const;

    virtual void cleanup() {}

    // ++ SKR
    virtual ::skr::gui::INativeDevice* get_resource_service() = 0;
    // -- SKR

    TextServer();
    virtual ~TextServer();
};

/*************************************************************************/

struct Glyph {
    int start = -1; // Start offset in the source string.
    int end   = -1; // End offset in the source string.

    uint8_t  count  = 0; // Number of glyphs in the grapheme, set in the first glyph only.
    uint8_t  repeat = 1; // Draw multiple times in the row.
    uint16_t flags  = 0; // Grapheme flags (valid, rtl, virtual), set in the first glyph only.

    float x_off   = 0.f; // Offset from the origin of the glyph on baseline.
    float y_off   = 0.f;
    float advance = 0.f; // Advance to the next glyph along baseline(x for horizontal layout, y for vertical).

    RID     font_rid;      // Font resource.
    int     font_size = 0; // Font size;
    int32_t index     = 0; // Glyph index (font specific) or UTF-32 codepoint (for the invalid glyphs).

    bool operator==(const Glyph& p_a) const;
    bool operator!=(const Glyph& p_a) const;

    bool operator<(const Glyph& p_a) const;
    bool operator>(const Glyph& p_a) const;
};

struct CaretInfo {
    Rect2                 l_caret;
    Rect2                 t_caret;
    TextServer::Direction l_dir;
    TextServer::Direction t_dir;
};

} // end namespace godot

/*************************************************************************/
// #define TS TextServerManager::get_singleton()->get_primary_interface()
